SciCombinator

Discover the most talked about and latest scientific content & concepts.

Concept: Valve Corporation

28

Reoperation for failing stentless aortic valve replacement is a technically demanding procedure that has traditionally been tackled in one of two ways: either root replacement or the more conservative option of implanting a stented valve within the valve. We sought to determine the relative operative risks, follow-up status and medium to long-term survival of these two methods.

Concepts: Valve Corporation, Valve, Derivative, Left ventricle, Aortic insufficiency, Aortic valve replacement, Aortic valve

18

Endobronchial valves (EBV) have been successfully used in patients with severe heterogeneous emphysema to improve lung physiology. Limited available data suggests that EBVs are also effective in homogeneous emphysema.

Concepts: Valve Corporation, Valve, Lung

1

Sex-related differences in morbidity and survival in bicuspid aortic valve (BAV) adults are fundamentally unknown. Contemporary studies portend excellent survival for BAV patients identified at early echocardiographic-clinical stages. Whether BAV adults incur a survival disadvantage throughout subsequent echocardiographic-clinical stages remains undetermined.

Concepts: Sexual dimorphism, Sex, Valve Corporation, Valve, Left ventricle, Aortic insufficiency, Aortic valve, Bicuspid aortic valve

0

Use of transcatheter aortic valve replacement (TAVR) for severe aortic stenosis is growing rapidly. However, to our knowledge, the durability of these prostheses is incompletely defined.

Concepts: Valve Corporation, Valve, Valvular heart disease, Left ventricle, Aortic valve stenosis, Aortic insufficiency, Aortic valve replacement, Aortic valve

0

Target lobar volume reduction (TLVR) is an important efficacy outcome measure for bronchoscopic lung volume reduction (BLVR) treatment using one-way endobronchial valves (EBV) in patients with severe emphysema. The commonly used cut-off value for TLVR that expresses a perceivable clinical benefit is -350 mL. However, a scientifically determined minimal important difference (MID) for TLVR never has been published. The objective of the present study was to determine the MID for TLVR on HRCT in patients who were treated with EBV.

Concepts: Integral, Chronic obstructive pulmonary disease, Valve Corporation, Present, Valve, Lung volume reduction surgery, Lung, Emphysema

0

0

To reduce the possibility of secondary deterioration of spinal injuries, it is desirable to maintain the spinal immobilisation that is applied in the prehospital setting throughout computed tomography (CT) scanning. A previous study found that metallic components within the inflation valve of the vacuum mattresses caused CT artefacts. The aim of our study was to investigate the effect of vacuum mattresses with plastic valves on CT artefacts, the radiation dose, and noise compared to a trauma transfer board and the spine boards currently used in our trauma system.

Concepts: Aluminium, Valve Corporation, Board, Valve, The Spine, Emergency medicine, Ionizing radiation, Physical trauma

0

The objective of this study was to investigate whether a fixed 10 cm H2 O positive end-expiratory pressure valve would increase the aeration of, and reduce atelectasis formation in, the lungs after induction of anaesthesia in dogs undergoing thoracic CT.

Concepts: Pressure relief valve, Pressure, Valve Corporation, Valve, Positive end-expiratory pressure

0

The xenoantigenicity of porcine bioprosthetic valves is implicated as an etiology leading to calcification and subsequent valve failure. Decellularization of porcine valves theoretically could erase the antigenicity of the tissue leading to more durable prosthetic valves, but the effectiveness of decellularization protocols in regard to completely removing antigens has yet to be verified. Our hypothesis was that decellularization would remove the more abundant α-gal antigens but not remove all the non α-gal antigens, which could mount a response.

Concepts: Valve Corporation, Valve, Artificial heart valve

0

To investigate the use of dual source dual-energy CT (DECT) quantitative parameters compared with the use of conventional CT for differentiating small (≤3cm) intrahepatic mass-forming cholangiocarcinoma (IMCC) from small liver abscess (LA) during the portal venous phase (PVP).

Concepts: Half-Life 2: Lost Coast, Valve Corporation, Portal venous system, Liver, Hepatic portal vein